Question

A batsman hits back a ball straight in the direction of the bowler without changing its initial speed of $12 ms^{-1}$. If the mass of the ball is 0.15 kg, the imparted to the ball is

• A. $36 N-s$
• B. $3.6 N-s$
• C. $0.36 N-s$
• D. $0.036 N-s$

Answer 1

Answer: (B)

$3.6 N-s$

Answer 2

Impulse = change in momentum
= mv - (-mv) = 2mv
= 2 $\times$ 0.15 $\times$ 12 = 3.6 Ns